Add 21/7 and 28/16, Solve 3 0/7 + 1 12/16 as a fraction

Add 21/7 and 28/16

1^st number: 3 0/7, 2^nd number: 1 12/16

21/7 + 28/16 is 19/4.

Find the least common denominator or LCM of the two denominators:
LCM of 7 and 16 is 112

Next, find the equivalent fraction of both fractional numbers with denominator 112
For the 1st fraction, since 7 × 16 = 112,
21/7 = 21 × 16/7 × 16 = 336/112
Likewise, for the 2nd fraction, since 16 × 7 = 112,
28/16 = 28 × 7/16 × 7 = 196/112
Add the two like fractions:
336/112 + 196/112 = 336 + 196/112 = 532/112
532/112 simplified gives 19/4
So, 21/7 + 28/16 = 19/4
In mixed form: 43/4

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